Apparatus for testing the balance of rotating bodies.



No. 782,024. PATENTED FEB. 7, 1905. G. J. A. HEISE.

APPARATUS FOR TESTING THE BALANCE OF ROTATING BODIES.

APPLICATION FILED NOV. 7, 1904.

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WITNESSES. INVENTOR I y I I I H mw R1 g Q ATfORf/EY No. 782,024.PATENTED FEB. 7, 1905.

c. J. A. HEISE. APPARATUS FOR TESTING THE BALANCE OF ROTATING BODIES.

APPLICATION FILED NOV. 7. 1904.

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ATTORNEYS WITNESSES:

, UNITED STATES Patented February 7, 1905.

PATENT OFFICE.

CHARLES J. A. HEISE, OF NEWARK, NETY JERSEY. ASSIGNOR OF FORTY FIVE ONEHUN DREDTHS NETVARK, N ETV JERSEY.

TO FRANZ J. BEYER, OF

APPARATUS FOR TESTING THE BALANCE OF ROTATING BODIES.

SPECIFICATION forming part of Letters Patent No. 782,024; dated February7, 1905.

Application filed November 7, 1904. Serial No. 231.719.

Be it known that I, OnAaLns J. A. Hmsu, a citizen of the United States,and a resident of Newark, in the county of Essex and State of NewJersey, have invented a new and improved Apparatus for Testing theBalance of Rotating Bodies, of which the following is a full, clear, andexact description.

The object of the invention is to provide a new and improved apparatusfor testing the balance of high-speed rotating bodies-such as grindingand polishing wheels, pulleys, and the like arranged to readily detectexisting inaccuracies with a view to correct the same prior to the useof the rotating body on the ma hine for which it is designed and toallow of adjustment to accommodate larger or smaller testing'shafts forheavier or lighter bodies to be tested.

The invention consists of novel features and parts and combinations ofthe same, as will be more fully described hereinafter and then pointedout in the claims.

A practical embodiment of the invention is represented in theaccompanying drawings, forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure '1 is an end elevation of the improvement. Fig. 2 is a sideelevation of the same, parts being in section. Fig. 3 is an end view ofa modified form of the improvement; and Fig. at is a side elevation ofthe same, parts being in section.

The spaced standards A and A are mounted on a single base B or on basesseparated from each other any desired distance according to p the lengthof the testing-shaft, and each of \Vhen the several parts are in theposition illustrated in Figs. 1 and 2, then the testingshaft G issupported by thetwo pairs of rings F, mounted to turn on ball-bearingscarried by the standards A and A, and consequently the shaft (1" whenrotated encounters comparatively little friction, owing to its supporton the rings F rotating independently one of the other and with theshaft G and approximately at the same surface speed.

By the arrangementdescribed the point of over-balance of the rotatingbody ll can be readily detected by the operator.

As shown in Figs. 1 and 2, the cones l) and D are pressed apart bysprings I)", and the cones are readily adjusted toward each other bysuitable nuts I, screwing on the corresponding spindle U, so as toinsure a proper contact of the balls E on the said cones. The innerfaceof each supporting-ring F is provided with an annular ball-race Fpreferably made V-shaped in cross-section to contact with each ball attwo points, and as the cones are adjusted as described they can bebrought in proper relation to the annular race F to insure easy runningof the supporting-ring F on its ball-bearing.

In order to accommodate larger or smaller testing-shafts Gr, thespindles O on each standard A and A are held adjustably thereon in atransverse direction,and for this purpose the standards A and A arepreferably provided with elongated slots A through which extend theouter ends of the spindles, the latter after proper adjustment is madebeing secured in position by screwing up the nuts C on the outer ends ofthe spindles.

In the modified form illustrated in Figs. 3 and 4 the standards A andA,secured on the base B, are provided with sets of spaced bearings A forthe spindles Oisecured in place in either of the bearings by screwing upthe nuts 0" on the outer ends of the spindles. By this arrangement thespindles can be moved nearer together or farther apart to accommodatelarger or smaller testing-shafts G", carrying the bodies H to be tested,the testing-shaft being in contact with and shifted by the annular ribsF of the rings F surrounding the pairs of cones D and Di held adjustablyon the spindles C by being screwed thereon and locked in place after thedesired adjustment is made by nuts I screwing on the said spindles. Eachof the cones D and D supports a set of balls E or E and the said ballsare in engagement with the inner faces of the supportingrings F; but theballs for each ring are kept apart by an annular rib F", extendingintegrally on the inner face of the ring F The testing apparatusillustrated in Figs. 3 and L is used the same as above described inreference to Figs. 1 and 2, so that further description thereof is notdeemed necessary.

It is understood that the standardsA A are placed adistance apartaccording to the length of the testing-shaft, and as the latter rests ona set of supporting-rings-it is evident that accurate horizontalalinement of the standards A A is not absolutely necessary.

Havingthus described my invention,I claim as new and desire to secure byLetters Patent 1. An apparatus for testing the balance of rotatingbodies,provided with means for supporting the testing-shaft, the saidmeans comprising separate standards, each carrying a pair of spindlesarranged parallel one to the other, a. pair of cones on each spindle, atesting-shaft-supporting ring surrounding each pair of cones,and ballsinterposed between the pair of cones and the said supporting-ring.

2. An apparatus for testing the balance of rotating b0dies,provided withmeans for supporting the testing-shaft,the said means comprisingseparate standards,each carryinga pair of spindles arranged parallel oneto the other, a pair of cones on each spindle,a testing-shaftsupportingring surrounding each pair of cones and provided on its inner surfacewith an annular ballrace,and balls in the said race, in engagement withthe said pair of cones.

3. An apparatus for testing the balance of rotating bodies, providedwith means for supporting the testing-shaft, the said means comprisingseparate standards, each carrying a pair of spindles arranged parallelone to the other, a pair of spaced cones held on each spindle, asupporting-ring surrounding each pair of cones and provided at itsperipheral surface with an annular rib for supporting the testing-shaftfor the rotating body, and balls interposed between the said pair ofcones and the said supporting-ring.

4. An apparatus for testing the balance of rotating bodies, providedwith means for supporting the testing-shaft, the said means comprisingseparate standards, each carrying a pair of spindles-arranged parallelone to the other, a pair of spaced cones held on each spindle, asupporting-ring surrounding each pair of cones and provided at itsperipheral surface with an annular rib for supporting the testing-shaftfor the rotating body, balls interposed between the said pair of conesand the said supporting-ring, and means for adjustably supporting thesaid spindles on the said standards.

5. An apparatus for testing the balance of rotating bodies, providedwith means for supporting the testing-shaft, the said means comprisingseparate standards, each carrying a pair of spindles arranged parallelone to the other. a pair of spaced cones held on each spindle, springsinterposed between the 0pposite faces of the said cones, asupportingring surrounding each pair of cones and provided at itsperipheral surface with an annular rib for supporting the testing-shaftfor the rotating body, and balls interposed between the said pair ofcones and the said supporting-ring.

6. An apparatus for testing the balance of rotating bodies, providedwith means for supporting the testing-shaft, the said means comprisingspaced pairs of supporting-rings, each ring having an annular rib on itsperipheral face for contact by the peripheral face of the testing-shaftcarrying the rotating body to be tested, and ball-bearings for the saidsupporting-rings. 7. An apparatus for testing the balance of rotatingbodies, provided with means for supporting the testing-shaft, the saidmeans comprising spaced pairs of supporting-rings, each ring having anannular rib on its peripheral face for contact by the peripheral face ofthe testing-shaft carrying the rotating body to be tested, andball-bearings for the said supporting-rings, each ball-bearingcomprising nonrotatable cones within a supporting-ring and adjustabletoward and from each other and balls interposed between the inner faceof a supporting-ring and the corresponding pair of cones.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

OHARLES J. A. HEISE. Witnesses:

THEo. (Jr. HOSTER, EVERARD BOLTON MARsHALL.

